PATHOGENETIC CHANGES IN THE CYTOKINE SYSTEM IN PATIENTS WITH GASTRIC ULCER DISEASE AND THEIR CLINICAL EVALUATION

ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-12 847 PATHOGENETIC CHANGES IN THE CYTOKINE SYSTEM IN PATIENTS WITH GASTRIC ULCER DISEASE AND THEIR CLINICAL EVALUATION Komilova Nargiza Shokirovna 1st year master’s student in internal diseases,Urgench state medical institute, Urgench, Uzbekistan Abstract. Gastric ulcer disease is a chronic inflammatory disorder of the gastrointestinal tract that continues to represent a significant medical and social problem worldwide. Despite major advances in diagnostic techniques and pharmacological treatment, the disease is still associated with frequent relapses, complications, and a decline in quality of life. In recent years, increasing attention has been focused on the role of immune and inflammatory mechanisms in the pathogenesis of gastric ulcer disease. Cytokines are key mediators that regulate inflammatory reactions, immune responses, and tissue repair processes in the gastric mucosa. An imbalance between pro-inflammatory and antiinflammatory cytokines leads to persistent inflammation, increased mucosal damage, and delayed ulcer healing. This study aimed to investigate pathogenetic changes in the cytokine system in patients with gastric ulcer disease and to evaluate their clinical and diagnostic significance. The study was conducted at the Khorezm Multidisciplinary Medical Center and included patients with endoscopically confirmed gastric ulcer disease and a control group of healthy individuals. Serum levels of tumor necrosis factor-alpha, interleukin-1β, interleukin-6, and interleukin-10 were assessed using enzyme-linked immunosorbent assay. The results demonstrated significantly increased levels of pro-inflammatory cytokines and reduced levels of anti-inflammatory cytokines in patients with gastric ulcers. A more pronounced cytokine imbalance was observed in patients with severe clinical manifestations and larger ulcer defects. These findings confirm the important pathogenetic role of cytokine dysregulation in gastric ulcer disease and suggest that cytokine profiling may be useful for assessing disease activity, severity, and treatment effectiveness. Keywords: gastric ulcer disease, cytokines, inflammation, TNF-alpha, interleukins, immune mechanisms, pathogenesis Introduction. Gastric ulcer disease is one of the most common chronic diseases of the digestive system and remains a major cause of morbidity worldwide [1]. It is characterized by the formation of deep defects in the gastric mucosa resulting from an imbalance between aggressive factors, such as gastric acid, pepsin, Helicobacter pylori infection, and non-steroidal anti-inflammatory drugs, and protective mechanisms of the gastric mucosal barrier [2]. Although the incidence of gastric ulcer disease has decreased in some regions due to effective eradication therapy and improved pharmacological management, the disease continues to pose a significant clinical challenge due to its recurrent course, potential complications, and socioeconomic burden [3]. Traditionally, gastric ulcer disease has been considered primarily as an acid-related disorder; however, growing evidence indicates that inflammatory and immune mechanisms play a central role in its development and progression [4]. Chronic inflammation of the gastric mucosa leads to tissue damage, impaired regeneration, and delayed healing of ulcer defects. The inflammatory response is largely regulated by cytokines, which are small signaling proteins produced by immune cells, epithelial cells, and fibroblasts in response to injury and infection [5]. Cytokines act in a complex network, ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-12 848 influencing the activation, differentiation, and migration of inflammatory cells, as well as vascular permeability and epithelial cell proliferation. Pro-inflammatory cytokines, such as tumor necrosis factor-alpha (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6), play a particularly important role in the pathogenesis of gastric ulcer disease [4,5]. These cytokines stimulate the recruitment of neutrophils and macrophages to the site of inflammation, enhance the production of reactive oxygen species, and promote apoptosis of gastric epithelial cells, thereby aggravating mucosal injury. In contrast, anti-inflammatory cytokines, including interleukin-10 (IL-10), exert protective effects by suppressing excessive inflammatory responses, inhibiting pro-inflammatory cytokine synthesis, and promoting tissue repair and regeneration [6]. An imbalance between pro-inflammatory and anti-inflammatory cytokines results in sustained inflammation of the gastric mucosa and contributes to chronicity and recurrence of gastric ulcer disease [5,6]. Moreover, the degree of cytokine imbalance has been shown to correlate with ulcer size, depth, and clinical severity, suggesting that cytokines may serve as potential biomarkers of disease activity [7]. Therefore, comprehensive investigation of cytokine system alterations in gastric ulcer disease is of considerable clinical and scientific interest and may contribute to improved diagnostic and therapeutic strategies. Objective. The objective of this study was to investigate pathogenetic changes in the cytokine system in patients with gastric ulcer disease and to evaluate their clinical and diagnostic significance in relation to disease severity and inflammatory activity. Materials and methods. This observational study was conducted at the Khorezm multidisciplinary medical center in 2025. The study included adult patients aged 18–65 years with endoscopically confirmed gastric ulcer disease. A control group consisted of healthy individuals without a history of gastrointestinal disorders. Venous blood samples were collected from all participants under standardized conditions. Serum concentrations of pro-inflammatory cytokines TNF-α, IL-1β, and IL6, as well as the anti-inflammatory cytokine IL-10, were determined using enzyme-linked immunosorbent assay (ELISA) kits according to the manufacturer’s instructions. Clinical data, including disease duration, ulcer size, localization, and severity of symptoms, were recorded. Statistical analysis was performed using standard statistical software, and results were expressed as mean ± standard deviation. A p-value of less than 0.05 was considered statistically significant. Results. The analysis revealed significant alterations in the cytokine system in patients with gastric ulcer disease compared with healthy controls. Serum levels of TNF-α, IL-1β, and IL-6 were markedly increased in patients with active gastric ulcers, indicating pronounced inflammatory activity. In contrast, serum levels of IL-10 were significantly reduced. Patients with larger ulcer defects and more severe clinical symptoms demonstrated higher concentrations of pro-inflammatory cytokines and a more pronounced decrease in anti-inflammatory cytokine levels. These findings suggest a strong association between cytokine imbalance and disease severity. Discussion. The results of this study confirm that cytokine-mediated inflammation plays a key role in the pathogenesis of gastric ulcer disease. Increased production of pro-inflammatory cytokines contributes to persistent mucosal inflammation, tissue damage, and delayed ulcer healing. At the same time, reduced anti-inflammatory cytokine activity weakens protective mechanisms and promotes chronicity of the disease. These findings are consistent with previous studies that emphasize the importance of cytokine imbalance in gastric ulcer development and recurrence [4–7]. Evaluation of ISSN: 2582-4686 SJIF 2021-3.261,SJIF 20222.889, 2024-6.875 ResearchBib IF: 9.948 / 2024 VOLUME-5, ISSUE-12 849 cytokine profiles may therefore provide valuable additional information for assessing disease activity and optimizing therapeutic approaches. Conclusion. Pathogenetic changes in the cytokine system are an important component of gastric ulcer disease. An imbalance between pro-inflammatory and anti-inflammatory cytokines is closely associated with disease activity, severity, and clinical manifestations. Assessment of cytokine levels may serve as a useful clinical and diagnostic tool for evaluating inflammatory status and monitoring treatment effectiveness in patients with gastric ulcer disease. References: 1. Kusters JG, van Vliet AHM, Kuipers EJ. Pathogenesis of Helicobacter pylori infection. Clinical Microbiology Reviews. 2006;19(3):449–490. 2. Sung JJY, Kuipers EJ, El-Serag HB. Systematic review: the global incidence and prevalence of peptic ulcer disease. Alimentary Pharmacology & Therapeutics. 2009;29(9):938–946. 3. Malfertheiner P, et al. Peptic ulcer disease. The Lancet. 2009;374(9699):1449–1461. 4. Konturek PC, Brzozowski T, Konturek SJ. Role of cytokines in gastric ulcer healing. Alimentary Pharmacology & Therapeutics. 2011;34(7):723–739. 5. Moss SF, Sood S. Helicobacter pylori and cytokine responses. Gastroenterology Clinics of North America. 2015;44(3):487–505. 6. Abbas AK, Lichtman AH, Pillai S. Cellular and Molecular Immunology. 9th ed. Elsevier; 2018. 7. 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